Urine

urinaryhuman urinepissliquid wastepeeurinatedurine pHapple juiceDark urinegreenish-bluish discoloration
Urine is a liquid by-product of metabolism in humans and in many other animals.wikipedia
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Urinary bladder

bladderfundusintravesical
Urine flows from the kidneys through the ureters to the urinary bladder.
The urinary bladder is a hollow muscular organ in humans and vertebrates that collects and stores urine from the kidneys before disposal by urination.

Kidney

kidneysrenalkidney disorder
Urine flows from the kidneys through the ureters to the urinary bladder.
Each kidney is attached to a ureter, a tube that carries excreted urine to the bladder.

Urination

urinateurinatingmicturition
Urination results in urine being excreted from the body through the urethra.
Urination is the release of urine from the urinary bladder through the urethra to the outside of the body.

Ureter

uretersureteralureteropelvic junction
Urine flows from the kidneys through the ureters to the urinary bladder.
The ureters are tubes made of smooth muscle fibers that propel urine from the kidneys to the urinary bladder.

Urethra

male urethraurethralFemale urethra
Urination results in urine being excreted from the body through the urethra.
In anatomy, the urethra (from Greek οὐρήθρα – ourḗthrā) is a tube that connects the urinary bladder to the urinary meatus for the removal of urine from the body of both females and males.

Urea

carbamideBosch–Meiser urea processCO(NH 2 ) 2
The cellular metabolism generates many by-products which are rich in nitrogen and must be cleared from the bloodstream, such as urea, uric acid, and creatinine. In humans, soluble wastes are excreted primarily by the urinary system and, to a lesser extent in terms of urea, removed by perspiration.
Urea serves an important role in the metabolism of nitrogen-containing compounds by animals and is the main nitrogen-containing substance in the urine of mammals.

Uric acid

urateuricblood uric acid
The cellular metabolism generates many by-products which are rich in nitrogen and must be cleared from the bloodstream, such as urea, uric acid, and creatinine.
Uric acid is a product of the metabolic breakdown of purine nucleotides, and it is a normal component of urine.

Reuse of human waste

reuse of excretareusereuse excreta
Therefore, urine can be used as a fertilizer.
Reuse of human waste (or re-use or use of human waste) refers to the safe, beneficial use of animal or human waste, i.e. feces (or faeces in British English) and urine.

Excretion

excretedexcretoryexcrete
Urination results in urine being excreted from the body through the urethra.
For example, in mammals urine is expelled through the urethra, which is part of the excretory system.

Lant

Historically, aged or fermented urine (known as lant) was also used for gunpowder production, household cleaning, tanning of leather and dyeing of textiles.
Lant is aged urine.

Human feces

stoolfecesstools
Human urine and feces are collectively referred to as human waste or human excreta, and are managed with a sanitation system.
Human feces together with human urine are collectively referred to as human waste or human excreta.

Nitrogen cycle

nitrogen metabolismnitrogennitrogen cycling
Urine has a role in the earth's nitrogen cycle.
For example, the nitrogenous wastes in animal urine are broken down by nitrifying bacteria in the soil to be used by plants.

Human waste

excretahuman excretaordure
Human urine and feces are collectively referred to as human waste or human excreta, and are managed with a sanitation system.
Human waste (or human excreta) refers to the waste products of the human digestive system and the human metabolism, namely feces and urine.

Urinary system

urinary tracturinaryrenal system
In humans, soluble wastes are excreted primarily by the urinary system and, to a lesser extent in terms of urea, removed by perspiration.
Following filtration of blood and further processing, wastes (in the form of urine) exit the kidney via the ureters, tubes made of smooth muscle fibres that propel urine towards the urinary bladder, where it is stored and subsequently expelled from the body by urination (voiding).

Oliguria

Decreased urine outputlow urine outputoliguric
Polyuria is a condition of excessive production of urine (> 2.5 L/day), oliguria when < 400 mL are produced, and anuria one of < 100 mL per day.
Oliguria or hypouresis is the low output of urine specifically more than 80 ml/day but less than 400ml/day.

Anuria

No urine productionabsence of urine formationabsent
Polyuria is a condition of excessive production of urine (> 2.5 L/day), oliguria when < 400 mL are produced, and anuria one of < 100 mL per day.
Anuria is nonpassage of urine, in practice is defined as passage of less than 100 milliliters of urine in a day.

Excretory system

excretoryexcretedexcretory functions
Most animals have excretory systems for elimination of soluble toxic wastes.
In humans and other amniotes (mammals, birds and reptiles) most of these substances leave the body as urine and to some degree exhalation, mammals also expel them through sweating.

Urobilin

urochrome
In the urine of a healthy individual the color comes primarily from the presence of urobilin.
Urobilin or urochrome is the chemical primarily responsible for the yellow color of urine.

Phenazopyridine

pyridiumPhenazopyridine hydrochlorideUristat
Phenazopyridine is a medication which, when excreted into the urine, has a local analgesic effect.

Hematuria

blood in the urinehaematuriabloody urine
It is defined by the presence of blood or red blood cells in the urine.

Tanning (leather)

tannerytanningtanner
Historically, aged or fermented urine (known as lant) was also used for gunpowder production, household cleaning, tanning of leather and dyeing of textiles.
This was done by either soaking the skin in urine, painting it with an alkaline lime mixture, or simply allowing the skin to putrefy for several months then dipping it in a salt solution.

Beeturia

pink urine
Beeturia is the passing of red or pink urine after eating beetroots or foods colored with beetroot extract or beetroot pigments.

Mammal

mammalsMammaliamammalian
A urinalysis can detect nitrogenous wastes of the mammalian body.
Bilirubin, a waste product derived from blood cells, is passed through bile and urine with the help of enzymes excreted by the liver.

Purple urine bag syndrome

PUBS
Purple urine bag syndrome (PUBS) is a medical syndrome where purple discoloration of urine occurs in people with urinary catheters and co-existent urinary tract infection.

Asparagusic acid

asparagusate
Eating asparagus can cause a strong odor reminiscent of the vegetable caused by the body's breakdown of asparagusic acid.
It is found in asparagus and is believed to be the metabolic precursor to odorous sulfur compounds responsible for the distinctive smell of urine which has long been associated with eating asparagus.